Pulmonary ventilation

Question 1

Total volume of the conducting airways
from the nose or mouth down to the level of the terminal bronchioles,
and is about 150 ml on the average in humans.

Answer 1

Anatomic dead space

Question 2

The anatomic dead space fills with inspired air at the end of each
inspiration,, but this air is

Answer 2

exhaled unchanged

Question 3

Volume of air remaining in conducting passages is

Answer 3

anatomic dead space

Question 4

Alveolar ventilation is the amount of air reaching

Answer 4

alveoli each minute

Question 5

Alveolar ventilation is calculated as

Answer 5

VA = (tidal volume - anatomic dead space) x respirato

Question 6

John has a RR of 12 breaths/minute, a tidal volume of 500 ml and
dead space of 150 ml. What is his VA

Answer 6

4200 ml/minute

Question 7

How would VA change breathing through a straw

Answer 7

You have increased your anatomical dead space but this also mimics what small airway disease such as asthma, emphysema etc. feel

Question 8

Relationships among VT, VE, and VA
is Determined by

Answer 8

respiratory rate and tidal volume

Question 9

For a given respiratory rate: Increasing tidal volume increases

Answer 9

alveolar ventilation rate

Question 10

For a given tidal volume:
Increasing respiratory rate increases

Answer 10

alveolar ventilation rate

Question 11

Total lung volume is divided into a series of volumes and capacities useful in
diagnosing respiratory diseases and conditions.
What are the four Pulmonary Volumes?

Answer 11

1. Resting tidal volume (Vt)
2. Expiratory reserve volume
   3.Residual volume
   4.Inspiratory volume

Question 12

Resting Tidal Volume (Vt) occurs in a

Answer 12

normal respiratory cycle

Question 13

Expiratory Reserve Volume (ERV) occur

Answer 13

after a normal exhalation

Question 14

This volume occurs after maximal exhalation
- Minimal volume (in a collapsed lung)

Answer 14

Residual volume

Question 15

After a normal inspiration

Answer 15

Inspiratory reserve volume (IRV)

Question 16

 Four Calculated Respiratory Capacities

Answer 16

1. Inspiratory capacity
   Tidal volume + inspiratory reserve volume
2. Functional residual capacity (FRC) Expiratory reserve volume + residual volume
3. Vital capacity
   Expiratory reserve volume + tidal volume + inspiratory reserve volume

Total lung capacity
Vital capacity + residual volume